is simply another word for the vertebral column
, and is an abbreviation of spinal column. It constitutes, therefore, a bony column made up of vertebra one on top of another, joined by fibrous intervertebral discs. The thoracic vertebra make up the longest section of the spine
with twelve vertebra altogether, progressing from the base of the neck
to the middle of the back. The upper section extends from the cervical vertebra
and the lower meets the lumbar vertebra
. Its name "thoracic" is because of the twelve ribs making up the thorax that are joined, fixed or movable, to the twelve thoracic vertebra. The thoracic vertebra are concavely curved, towards the back of the body
, which is called kyphosis
. Apart from their mechanic role in supporting the body, these thoracic vertebra ensure the protection of the spinal cord
and every nerve emerging from the vertebra that principally innervate the different areas of the thorax.
Original article published by
. Translated by Jeff
Latest update on August 19, 2014 at 12:37 PM by christelle.b.